[FFmpeg-devel] [PATCH] lavc/vvc: Fix emulation prevention byte handling

[Nuo Mi]

On Sat, Jan 27, 2024 at 12:21 AM <post at frankplowman.com> wrote:

> From: Frank Plowman <post at frankplowman.com>
>
> nal->skipped_bytes_pos contains the positions of errors relative to the
> start of the slice header, whereas the position they were tested against
> is relative to the start of the slice data, i.e. one byte after the end
> of the slice header.
>
> Patch fixes this by storing the size of the slice header in H266RawSlice
> and adding it to the position given by the GetBitContext before
> comparing to skipped_bytes_pos.  This fixes AVERROR_INVALIDDATAs for
> various valid bitstreams, such as the LMCS_B_Dolby_2 conformance
> bitstream.
>
> Signed-off-by: Frank Plowman <post at frankplowman.com>
>
Hi Frank,
Thanks for the patch.
The decode md5 still mismatch with reference for LMCS_B_Dolby_2
Do you happen to know why?

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